Portable drill mounting



Mmch 30, 1937.

W. A. EILER PORTABLE DRILL MOUNTING Filed June 27, 1955 2 Sheets-sheet 1 Mwah 35 93?? w. A. 'EHLER 2@753.

PORTABLE DR ILL MOUNTING Filed June 27, 1955 2 Sheets-Sheef 2 0W/iam A.

Patented Mar. 30, 1937 UNITED STATES PATENT PORTABLE DRILL MOUNTING William A. Eiler, Benton, Wis.

Application June 27,

6 Claims.

An important object of my invention is to provide a drill mounting which can be readily set up and which can be quickly and easily adjusted to any desired angle for drilling.

Another object of my invention is the provi- I. sion' of a drill mounting which is sturdy and substantial but which is extremely light and easy to handle, and which can be transported from place to place with great facility'.

Other objects and advantage-s of my inven- `tion will be apparent during the course of the following description.

In the accompanying drawings, which form a part of this specification and wherein like characters of reference denote like or corresponding parts throughout the same,

Figure l is a side elevation of my improved drill mounting arranged for vertical drilling,

Figure 2 is a front elevation of the main drill frame,

Figure 3 is an elevation of one of the supporting legs,

Figure 4 is an edge View thereof,

Figure 5 is an elevation of one of the adjusting risers,

Figure 6 is an edge View thereof,

Figure '7 is a fragmentary cross section on the line 'I-l of Figure 1,

Figure 8 is a fragmentary sectional View on the line 8--8 of Figure 1,

Figure 9 is a detail side elevation of the drill adjusting chain, parts being broken away,

Figure 10 is a detail elevation of the driving gear for the chain and its operating members, Figure 11 is a top plan View of the base, Fi-gure 12 is an elevation of a supporting stand for use with the drill frame where high elevations are desired, and,

Figure 13 is a side View thereof with the drill frame supported thereon.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, a drill frame comprises a pair of spaced, centrally grooved rails I i bolted or otherwise secured to cross bars I2, shown in Figure 2 as three in number, although any desired nurnber of cross bars may be used. Suitable'channels I3 are formed on each rail II by angle irons I4 secured thereto as in Figure 7 A drill plate I5 is arranged in the channels I3 and freely slidable longitudinally of the rails II. Behind each rail II a grooved runner I6 is arranged in 1935, Serial No. 28,727

(Cl. Z55-51) spaced parallel relation to the rail and secured thereto for the greater portion of its length byV a reinforcing metal strap il bent into zig-zag formation as shown in Figure 1. The end portions of the runners IG are bent over -into an inclined position and secured adjacent the ends of rails II as seen in Figure 1. Suitable cross bars I2 are bolted to the vrearfaces of the groovedf runners I'S as shown in detail in Figure 8.

A suitable base i8 is provided for vertical and near vertical positions of the drillframe and the end of the drill frame may be removably andj pivotally secured to the base,Y as by a pivot pin I9. A pair of adjustable legs 2U, of elongated U-shape and preferably formed of angle iron, are pivoted behind the rails I I adjacent the cen-` ter of the drill frame by means ofv a suitable pivot rod 2|. In the vertical position ofthe drill frame, the legs 20 rest upon the base I8 adby means of pivot rods 24. 'Ihe risers 23 'each` comprises spaced arms secured to the pivot rods 24 and connected at their ends by suitable cross rods 25 adapted to be received in suitable spaced notches 267m the sides of the legs 2li, as seen in Figure 1. The angle Vof either of the legs 20 with respect to the drill frame may be varied by moving cross rod ,25 to another pair of notches 26.

The rails II, runners I6, cross bars I2 and I2 and reinforcing straps I 'l forma sturdy structurally strong drill frame of very light weight, and the legs 20 may be adjusted to support the drill frame in any desired position from the vertical position indicated in Figure 1 to a horizontal position. To place the drill frame in a horizontal o-r near horizontal position, one of the legs 28 is swung over the frame toy the dotted line position indicated in Figure 1 and braced by riser 23. indicated by broken line 2d' in Figurel. In this position the base I8 is not used, but the legs 2li rest directly on the surface of the ground indi-V cated by broken line 2l in Figure 1. When, for any reason it is undesirable to swing either of the legs over the end of the drill frame, the legv may be disconnected from pivot rod ZI and connected thereto on the opposite side of the drill frame. If desired, two risers can be arranged at each end of the frame to engage both legs at either end of the frame.

A rock drill 28 of 'any suitabley constructionY The path of the end of the leg is is mounted on drill plate I5 and operates a drill rod 29 in the usual manner, the drill rod being arranged in parallel relation to the drill frame. An idling sprocket gear 30' is rotatably mounted at each end of the drill frame between the rails II as indicated in Figure 1, and an endless sprocket chain 3| is passed over the sprockets 30. One of the links of the sprocket chain 3| is provided with a projecting loop or the like 32 adapted to detachably engage a loop33 or other projection on the plate I5 to move the plate in either direction with the chain 3|.

kA driven sprocket gear 34 Ais Vkeyed to a cross shaft 35 which is operated by .a worm gear 36. Worm gear 36 is driven by worm 31 operated by any suitable motor means such as a removable hand crank 38. Assuming a horizontal position of the frame, the lower `portion of the chain`3| v passes between the upper portion of the sprocket chainV and the driving sprocket 34 and engages the upper portion of the sprocket 34 as indicated in Figure 9. With this arrangement the chain is placed under slight tension by sprocket 34 and will be positively driven Without danger ofdis-` engaging the sprocket 34 which engages only the lower section of the chain.

The cross bars I2 are bowed in their central portions at 39 'and `the upper portion of the sprocket chain passes through this bowed portion of the bars I2, as indicated in Figures 8 and j 9. In operation, the drill plate and drill are moved from end to end of the drill frame by means of crank 38 and driving sprocket 34. The

drill plate may be turned vend for end, if desired Y for drilling from the opposite end of the frame.

The lower ends of the legs may be moved to any desired position on the base, and if desired a sliding plate support, or a ratchet 40 may be used to support the legs in their various positions.

When not to be used, legs 2l) may either be removed, or they may be swung into alignment with the railsY and thus be out of the Way of the operator. For horizontal drilling the frame may rest on the runners I6 in place of legs 20.

Suitable wheels 4| may be removably attached to base I8 for moving the drill frame from place to place as indicated in dotted lines in Figure 11, and the entire frame may be drawn as a trailer.

It will be seen that I have provided a drillk mounting capable of adjustment for drilling at any desired angle, which is strong structurally but light in weight, and which can be easily and rapidly set up and adjusted by a single operator with a minimum of effort.

When it is desired to drill at an elevation which is too high to be accommodated by the legs 20, I provide a pair of supports or standards, one of which is indicated in Figures l2.and 13. Each support comprises a pair of spaced uprights 42 having spaced openings 43 therein to receive pins 44 for securing the crossbar 45 in adjusted position. The drilling frame is placed between theV arranged at the same level for horizontal drilling or at diierent levels for inclined drilling.

While I have shown and described the preferred embodiment of my invention,.it` is` to be understood that various changesin the size, shapeand arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, what I claim and desire to protect by Letters Patent is:

1. In a drill mounting, a drill frame comprising and frameand adapted to vary the angle between the leg and frame, a second leg member arranged Y on the otherV side of the frame, said second leg member being adapted to be moved to the opposite side of the drill frame, an adjusting member adapted to connect said drill frame to the second leg in its second named position to vary the angle between the second leg and the drill frame, a drill slidemovably carried by said drill frame, means to adjust the drill slide longitudinally of the drill frame, and a rock -drill mounted on said drill slide.

2. In a drill mounting, a drill frame, a leg pivoted at its end to the drill frame and extending at an angle from Asaid frame on one side thereof, a riser pivotally connected. to .said frame. and

adapted to engage said leg `atselected .points along its length, an elongated U-shaped leg; ar-

ranged'on the other sidelof the frame'and pivotally connected thereto, said last `named leg being adapted to be swung about its pivot and over the frame to the opposite side of the frame, a second riser pivoted to the frame and adapted to engage the second named leg at selected points along its length while in its second named position to varyv the angle betweenv said second named leg and theV frame., a drill supporting slide movably mounted on the frame, and means to adjust the drill supporting slide longitudinally of the frame.

3. In a drill mounting, a drill frame, a leg pivoted at its end to the drill frame and extending at an angle from said frame on one side thereof,

Va 'riser pivotally connected toV said frame and to the opposite side of the frame, a second riser pivoted to the frame and adapted-to engage the second named leg at selected points along its length while in its second named position to vary the angle between said second named leg and the frame; a drill supporting slide movably mounted on the frame, means to adjust the drill supporting slide longitudinally of the frame, said drill supporting slide adjusting` means comprisingy sprockets rotatably mounted on said frame, an

endless chain passing around said sprockets and` engaging the drill supporting slide, and mechanism engaging one of said sprockets `to rotate it in either direction.

4. In adrill mounting, a drill frame comprising spaced,V channeled members, cross membersvk connecting said channeled members', a .pair of spaced longitudinal runners, reinforcing spacing members connecting the runners with the channeled members, a leg arranged on one side of the drill frame, an adjusting member connecting the leg and frame and' adapted to vary the angle between the leg and frame, a second leg member arranged on the other side of the frame, saidl second leg member being adapted to be moved zoLL I to the opposite side of the drill frame, an adjusting member adapted to connect said drill frame to the second leg in its second named position to Vary the angle between the second leg and the drill frame, a drill slide movably carried by said drill frame, means to adjust the drill slide longitudinally of the drill frame, and a rock drill mounted on said drill slide, said drill slide adjusting means comprising a plurality of sprockets rotatably mounted on said frame, an endless chain passing around said sprockets and engaging the drill slide, and mechanism engaging one of said sprockets to rotate it in either direction.

5. In a drill mounting, a drill frame, a leg pivoted to the drill frame and adapted to extend at an angle from said frame on one side thereof, a riser pivotally connected to said frame and adapted to engage said leg at selected points along its length, a second leg member arranged on the other side of the frame and pivotally connected thereto, said second named leg member being adapted to be moved to the opposite side of the drill frame, a second riser pivoted to the frame and adapted to engage the second named leg member at selected points along its length While in its second named position to Vary the angle between the second named leg and the frame, and a drill supporting member mounted on the frame.

6. In a drill mounting, a drill frame, a leg pivoted to the drill frame and adapted to extend at an angle from said frame on one side thereof, a riser pivotally connected to said frame and adapted to engage said leg at selected points along its length, a second leg member arranged on the other side of the frame and pivotally connected thereto, said second named leg member being adapted to be moved to the opposite side of the drill frame, a second riser pivoted to the frame and adapted to engage the second named leg member at selected points along its length, a drill supporting slide movably mounted on the frame, means to adjust the drill supporting slide longitudinally7 of the frame, said drill supporting slide adjusting means comprising sprockets rotatably mounted on the frame, an endless exible member passing around the sprockets and engaging the drill supporting slide, and mechanism engaging one of said sprockets to rotate it in either direction.

WILLIAM A. EILER. 

